Abrasive brush roller

Abrasive brush rollers refer to brush rollers made of abrasive filaments, which are widely used in textile machinery, metal surface planing, non-metallic sanding and other industries. How to identify the pros and cons of brushes? What is a high-quality abrasive brush? 1. The wire of the brush should not fall off during the working process. 2. The brush wire in the brush base should be fixed with high-strength stainless steel to prevent corrosion. 3. Using wavy curved brush wire. 4. The abrasive sand in the brush wire should not fall off due to the bending of the brush wire. 5. Reasonable brush wire height and density. 6. The brush wire should have high hardness and toughness in a humid environment. 7. The brush wire should have good bending recovery. 8. The brush wire should have good wear resistance. The so-called abrasive filaments refer to nylon filaments added with abrasives such as silicon carbide (SIC) or alumina (AO). As a new type of brush-making material, most of them are currently used in the manufacture of polishing brushes and polishing brushes. But it is precisely because it is an emerging brush-making material that many brush-making companies do not have a deep understanding of it. Sometimes, in order to make up for the lack of a certain function of the abrasive brush wire, a single change is taken for granted, which seems to be solved on the surface. Problems, in fact, bring more new problems. This article is from Brush, please indicate the source for reprinting, thank you. To sum up, most brush-making companies have the following changes: thickening the wire diameter, increasing the length of the brush wire, changing to thicker abrasives, and so on. The following analyzes the shortcomings of these practices one by one. Silicon carbide abrasive wire 1. Thicker wire diameter 1. I believe that many brush manufacturers believe that thickening the wire diameter can increase the hardness and enhance the cutting force. In fact, this is not the case, because the hardness and flexibility of the real high-quality abrasive wire have a perfect balance: the appropriate hardness makes the product have good rigidity, and the workpiece can be well contacted and ground; the appropriate flexibility makes The brush has good resilience, which not only ensures the machining accuracy of the workpiece surface, but also reduces the wear and internal stress of the brush during the grinding operation, thereby increasing the service life of the brush without breaking the wire. This article is from Brush, please indicate the source for reprinting, thank you. 2. Tests have shown that when all the conditions are the same but the wire diameter is different, the abrasion of 14mm is twice that of 12mm brush. 3. The main problems caused by thicker wire diameter are: reduced density of brush wire, lower fatigue resistance, faster wear, shorter service life, increased grinding stress, and easier wire breakage. Therefore, the correct approach is to use a thinner wire diameter as much as possible on the premise that the hardness of the brush can meet the process requirements. 2. Increasing the length of the brush filaments Brush manufacturers generally believe that the scrapped brushes are because the bristles are worn short, so if the brush filaments are lengthened, the flexibility will be better, and the durability should be longer and better. Actually, this made a big mistake. Because the real work in the polishing process is not the tangent surface of the brush wire, but the side of the brush wire, so the length of the brush wire is increased one-sidedly, and the swing range (angle) of each wire is also greatly increased, at 800-2500 speed/ Under the condition of minutes, the internal stress and fatigue coefficient of the base of the brush filaments will increase exponentially, causing the abrasive brush filaments to be easily broken and the filaments to be deformed significantly. 3. Switching to coarser abrasive grains to use coarser abrasive grains, the intention is to increase the cutting force, this is understandable, but in the case of little change in particle size, the effect of simply increasing the abrasive grains can almost be ignored On the contrary, there may be some negative effects, because when the brush is swinging, the abrasive will produce a shear on the brush wire itself. The larger the angle of the brush wire swing, the more obvious it is. The test proves that after the 120# and 180# abrasive filaments are folded in half for 30 times, the 120# abrasive filament can see obvious cracks under the microscope, while the 180# does not. Although this double-folding experiment has increased the difference, the reason is the same. The coarser abrasive grains cut the brush filaments more severely during the running of the brush. This article is from Brush, please indicate the source for reprinting, thank you. In summary, the abrasive brush filament is indeed a special kind of brush-making material. You must be careful when using it. Every time you change it, you must go through repeated trials and comparisons before it can be used in large quantities, so as to ensure the brush products. Meet user requirements. Welcome to visit the company website www.mxbrushmachinery.com Phone